upstream-man-pages/man2/xhtml/glTexCoord.xml

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   3 <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>glTexCoord</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glTexCoord"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glTexCoord — set the current texture coordinates</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1s</b>(</code></td><td>GLshort  </td><td><var class="pdparam">s</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1i</b>(</code></td><td>GLint  </td><td><var class="pdparam">s</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1f</b>(</code></td><td>GLfloat  </td><td><var class="pdparam">s</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1d</b>(</code></td><td>GLdouble  </td><td><var class="pdparam">s</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2s</b>(</code></td><td>GLshort  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLshort  </td><td><var class="pdparam">t</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2i</b>(</code></td><td>GLint  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLint  </td><td><var class="pdparam">t</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2f</b>(</code></td><td>GLfloat  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLfloat  </td><td><var class="pdparam">t</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2d</b>(</code></td><td>GLdouble  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLdouble  </td><td><var class="pdparam">t</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3s</b>(</code></td><td>GLshort  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLshort  </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLshort  </td><td><var class="pdparam">r</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3i</b>(</code></td><td>GLint  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLint  </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLint  </td><td><var class="pdparam">r</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3f</b>(</code></td><td>GLfloat  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLfloat  </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLfloat  </td><td><var class="pdparam">r</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3d</b>(</code></td><td>GLdouble  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLdouble  </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLdouble  </td><td><var class="pdparam">r</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4s</b>(</code></td><td>GLshort  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLshort  </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLshort  </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td>GLshort  </td><td><var class="pdparam">q</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4i</b>(</code></td><td>GLint  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLint  </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLint  </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td>GLint  </td><td><var class="pdparam">q</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4f</b>(</code></td><td>GLfloat  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLfloat  </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLfloat  </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td>GLfloat  </td><td><var class="pdparam">q</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4d</b>(</code></td><td>GLdouble  </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLdouble  </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLdouble  </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td>GLdouble  </td><td><var class="pdparam">q</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>s</code></em>, </span><span class="term"><em class="parameter"><code>t</code></em>, </span><span class="term"><em class="parameter"><code>r</code></em>, </span><span class="term"><em class="parameter"><code>q</code></em></span></dt><dd><p>
   4                     Specify <span class="emphasis"><em>s</em></span>, <span class="emphasis"><em>t</em></span>, <span class="emphasis"><em>r</em></span>, and <span class="emphasis"><em>q</em></span>  texture coordinates.
   5                     Not all parameters are present in all forms of the command.
   6                 </p></dd></dl></div></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1sv</b>(</code></td><td>const GLshort *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1iv</b>(</code></td><td>const GLint *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1fv</b>(</code></td><td>const GLfloat *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1dv</b>(</code></td><td>const GLdouble *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2sv</b>(</code></td><td>const GLshort *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2iv</b>(</code></td><td>const GLint *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2fv</b>(</code></td><td>const GLfloat *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2dv</b>(</code></td><td>const GLdouble *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3sv</b>(</code></td><td>const GLshort *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3iv</b>(</code></td><td>const GLint *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3fv</b>(</code></td><td>const GLfloat *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3dv</b>(</code></td><td>const GLdouble *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4sv</b>(</code></td><td>const GLshort *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4iv</b>(</code></td><td>const GLint *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4fv</b>(</code></td><td>const GLfloat *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4dv</b>(</code></td><td>const GLdouble *  </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters2"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>v</code></em></span></dt><dd><p>
   7                     Specifies a pointer to an array of one, two, three, or four elements,
   8                     which in turn specify the
   9                     <span class="emphasis"><em>s</em></span>,
  10                     <span class="emphasis"><em>t</em></span>,
  11                     <span class="emphasis"><em>r</em></span>, and
  12                     <span class="emphasis"><em>q</em></span> texture coordinates.
  13                 </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
  14             <code class="function">glTexCoord</code> specifies texture coordinates in
  15             one,
  16             two,
  17             three, or
  18             four dimensions.
  19             <code class="function">glTexCoord1</code> sets the current texture coordinates to
  20             <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
  21
  22                 <mml:mfenced open="(" close=")">
  23                     <mml:mi mathvariant="italic">s</mml:mi>
  24                     <mml:mn>0</mml:mn>
  25                     <mml:mn>0</mml:mn>
  26                     <mml:mn>1</mml:mn>
  27                 </mml:mfenced>
  28             </mml:math>;
  29             a call to
  30             <code class="function">glTexCoord2</code> sets them to
  31             <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
  32
  33                 <mml:mfenced open="(" close=")">
  34                     <mml:mi mathvariant="italic">s</mml:mi>
  35                     <mml:mi mathvariant="italic">t</mml:mi>
  36                     <mml:mn>0</mml:mn>
  37                     <mml:mn>1</mml:mn>
  38                 </mml:mfenced>
  39             </mml:math>.
  40             Similarly, <code class="function">glTexCoord3</code> specifies the texture coordinates as
  41             <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
  42
  43                 <mml:mfenced open="(" close=")">
  44                     <mml:mi mathvariant="italic">s</mml:mi>
  45                     <mml:mi mathvariant="italic">t</mml:mi>
  46                     <mml:mi mathvariant="italic">r</mml:mi>
  47                     <mml:mn>1</mml:mn>
  48                 </mml:mfenced>
  49             </mml:math>,
  50             and
  51             <code class="function">glTexCoord4</code> defines all four components explicitly as
  52             <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
  53
  54                 <mml:mfenced open="(" close=")">
  55                     <mml:mi mathvariant="italic">s</mml:mi>
  56                     <mml:mi mathvariant="italic">t</mml:mi>
  57                     <mml:mi mathvariant="italic">r</mml:mi>
  58                     <mml:mi mathvariant="italic">q</mml:mi>
  59                 </mml:mfenced>
  60             </mml:math>.
  61         </p><p>
  62             The current texture coordinates are part of the data
  63             that is associated with each vertex and with the current
  64             raster position.
  65             Initially, the values for
  66             <span class="emphasis"><em>s</em></span>,
  67             <span class="emphasis"><em>t</em></span>,
  68             <span class="emphasis"><em>r</em></span>, and
  69             <span class="emphasis"><em>q</em></span>
  70             are (0, 0, 0, 1).
  71         </p><p>
  72         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>
  73             The current texture coordinates can be updated at any time.
  74             In particular,
  75             <code class="function">glTexCoord</code> can be called between a call to <a class="citerefentry" href="glBegin.xml"><span class="citerefentry"><span class="refentrytitle">glBegin</span></span></a> and the corresponding
  76             call to <a class="citerefentry" href="glEnd.xml"><span class="citerefentry"><span class="refentrytitle">glEnd</span></span></a>.
  77         </p><p>
  78             When the <code class="code">ARB_imaging</code> extension is supported, <code class="function">glTexCoord</code> always
  79             updates texture unit <code class="constant">GL_TEXTURE0</code>.
  80         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p>
  81             <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_CURRENT_TEXTURE_COORDS</code>
  82         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
  83             <a class="citerefentry" href="glMultiTexCoord.xml"><span class="citerefentry"><span class="refentrytitle">glMultiTexCoord</span></span></a>,
  84             <code class="function">glTexCoordPointer</code>,
  85             <a class="citerefentry" href="glVertex.xml"><span class="citerefentry"><span class="refentrytitle">glVertex</span></span></a>
  86         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
  87             Copyright <span class="trademark"></span>© 1991-2006
  88             Silicon Graphics, Inc. This document is licensed under the SGI
  89             Free Software B License. For details, see
  90             <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.
  91         </p></div></div></body></html>